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Former SMU EDGE Billy Walton signs with Oklahoma State

On3 imageby: Billy Embody01/06/26BillyEmbody

SMU defensive end Billy Walton entered the NCAA Transfer Portal on Monday and on Tuesday, he signed with Oklahoma State, On3 has learned. The 6-3, 250-pounder will have two years of eligibility remaining with the Cowboys under new head coach Eric Morris.

Walton joins standout North Texas running back Caleb Hawkins and quarterback Drew Mestemaker as among those transferring to OSU to join Morris.

The Cowboys are entering a new era coming off of one of the worst seasons in program history in 2025. They finished 1-11 and fired longtime coach Mike Gundy, who is also the winningest coach in program history.

OSU has gone a combined 4-20 over the past two seasons and failed to win a conference game in that span, dropping 18 straight Big 12 matchups. The hope is that the coaching change and these transfer portal additions can inspire a turnaround to get the Cowboys back to competing for Big 12 titles.

The Dallas (Tex.) South Oak Cliff product played in 22 contests over two seasons with the Mustangs. This season, he played in 13 games, making six tackles, two tackles for loss and two sacks. One sack came in SMU’s Holiday Bowl win over No. 17 Arizona.

He transferred in to SMU from Texas. Walton played in two games during the 2023 season. He did not record any statistics for the Longhorns during his lone season in Austin.

Before college, Walton was a three-star recruit, per the Rivals Industry Ranking, a proprietary algorithm that compiles ratings and rankings from all three primary recruiting media services. He was the No. 488 player in the class of 2023 and the No. 42 EDGE. 

He held offers from over 20 schools during his high school recruitment, including Texas A&M, Tennessee and Oklahoma State, among a slew of others.

The 2025-26 college football transfer portal will last 15 days, spanning from Jan. 2 to Jan. 16, the NCAA decided. While players have just over two weeks  to enter the portal, they’re not under a deadline to commit when they enter. Traditionally, the cut-off for committing has been how late a school can enroll a player through admissions, so it varies throughout the sport.

To keep up with the latest players on the move, check out On3’s Transfer Portal wire. The On3 Transfer Portal Instagram account and Twitter account are excellent resources to stay up to date with the latest moves.